/*
 * Copyright 2002-2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using Spring.Messaging.Ems.Common;

namespace Spring.Messaging.Ems.Connections;

/// <summary>
/// MessageProducer decorator that adapts calls to a shared MessageProducer
/// instance underneath, managing QoS settings locally within the decorator.
/// </summary>
/// <author>Juergen Hoeller</author>
/// <author>Mark Pollack (.NET)</author>
public class CachedMessageProducer : IMessageProducer
{
    private readonly IMessageProducer target;

    private object originalDisableMessageID;

    private object originalDisableMessageTimestamp;

    private MessageDeliveryMode deliveryMode;

    private int priority;

    private long timeToLive;

    /// <summary>
    /// Initializes a new instance of the <see cref="CachedMessageProducer"/> class.
    /// </summary>
    /// <param name="target">The target.</param>
    public CachedMessageProducer(IMessageProducer target)
    {
        this.target = target;
        deliveryMode = target.MsgDeliveryMode;
        priority = target.Priority;
        timeToLive = target.TimeToLive;
    }

    /// <summary>
    /// Gets or sets a value indicating whether disable setting of the message ID property.
    /// </summary>
    /// <value><c>true</c> if disable message ID setting; otherwise, <c>false</c>.</value>
    public bool DisableMessageID
    {
        get
        {
            return target.DisableMessageID;
        }
        set
        {
            if (originalDisableMessageID == null)
            {
                originalDisableMessageID = target.DisableMessageID;
            }

            target.DisableMessageID = value;
        }
    }

    /// <summary>
    /// Gets or sets a value indicating whether disable setting the message timestamp property.
    /// </summary>
    /// <value>
    /// 	<c>true</c> if disable message timestamp; otherwise, <c>false</c>.
    /// </value>
    public bool DisableMessageTimestamp
    {
        get
        {
            return target.DisableMessageTimestamp;
        }
        set
        {
            if (originalDisableMessageTimestamp == null)
            {
                originalDisableMessageTimestamp = target.DisableMessageTimestamp;
            }

            target.DisableMessageTimestamp = value;
        }
    }

    /// <summary>
    /// Gets or sets the producer's default delivery mode.
    /// </summary>
    /// <value>The message delivery mode for this message producer</value>
    public int DeliveryMode
    {
        get { return (int) this.deliveryMode; }
        set { this.deliveryMode = (MessageDeliveryMode) value; }
    }

    /// <summary>
    /// Gets or sets the MSG delivery mode.
    /// </summary>
    /// <value>The MSG delivery mode.</value>
    public MessageDeliveryMode MsgDeliveryMode
    {
        get { return this.deliveryMode; }
        set { this.deliveryMode = value; }
    }

    /// <summary>
    /// Gets or sets the priority of messages sent with this producer.
    /// </summary>
    /// <value>The priority.</value>
    public int Priority
    {
        get { return priority; }
        set { priority = value; }
    }

    /// <summary>
    /// Gets or sets the the default length of time in milliseconds from its dispatch time
    /// that a produced message should be retained by the message system.
    /// </summary>
    /// <remarks>Time to live is set to zero by default.</remarks>
    /// <value>The message time to live in milliseconds; zero is unlimited</value>
    public long TimeToLive
    {
        get { return timeToLive; }
        set { timeToLive = value; }
    }

    public Destination Destination
    {
        get { return target.Destination; }
    }

    /// <summary>
    /// Gets the target MessageProducer, the producer we are 'wrapping'
    /// </summary>
    /// <value>The target MessageProducer.</value>
    public IMessageProducer Target
    {
        get { return target; }
    }

    /// <summary>
    /// Sends the specified message.
    /// </summary>
    /// <param name="message">The message.</param>
    public void Send(Message message)
    {
        target.Send(message, this.deliveryMode, this.priority, this.timeToLive);
    }

    /// <summary>
    /// Sends the specified message.
    /// </summary>
    /// <param name="message">The message.</param>
    /// <param name="deliveryMode">The delivery mode.</param>
    /// <param name="priority">The priority.</param>
    /// <param name="timeToLive">The time to live.</param>
    public void Send(Message message, int deliveryMode, int priority, long timeToLive)
    {
        target.Send(message, deliveryMode, priority, timeToLive);
    }

    /// <summary>
    /// Sends a message to the specified destination.
    /// </summary>
    /// <param name="destination">The destination.</param>
    /// <param name="message">The message.</param>
    public void Send(Destination destination, Message message)
    {
        target.Send(destination, message, this.deliveryMode, this.priority, this.timeToLive);
    }

    public void Send(Message message, MessageDeliveryMode deliveryMode, int priority, long timeToLive)
    {
        target.Send(message, deliveryMode, priority, timeToLive);
    }

    public void Send(Destination dest, Message message, int deliveryMode, int priority, long timeToLive)
    {
        target.Send(dest, message, deliveryMode, priority, timeToLive);
    }

    public void Send(Destination dest, Message message, MessageDeliveryMode deliveryMode, int priority, long timeToLive)
    {
        target.Send(dest, message, deliveryMode, priority, timeToLive);
    }

    /// <summary>
    /// Reset properties.
    /// </summary>
    public void Close()
    {
        // It's a cached MessageProducer... reset properties only.
        if (originalDisableMessageID != null)
        {
            target.DisableMessageID = (bool) originalDisableMessageID;
            originalDisableMessageID = null;
        }

        if (originalDisableMessageTimestamp != null)
        {
            target.DisableMessageTimestamp = (bool) originalDisableMessageTimestamp;
            originalDisableMessageTimestamp = null;
        }
    }

    public MessageProducer NativeMessageProducer
    {
        get { return target.NativeMessageProducer; }
    }

    /// <summary>
    /// Returns string indicated this is a wrapped MessageProducer
    /// </summary>
    /// <returns></returns>
    public override string ToString()
    {
        return "Cached EMS MessageProducer: " + this.target;
    }
}
